Also the exact same set of people (and I mean, literally, look up the names of the leaders) tried almost exactly the same thing a few years earlier around carbon tax and environmental issues. But the government was stronger then and Canadians more united.
And yes, they had massive and well documented funding from American conservative lobby groups, in both instances.
Maybe not technically a coup if there's an election held right after, fair. Let's just agree to call it "tried to overthrow the government."